java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/Elevator-Integer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:14:52,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:14:52,565 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:14:52,578 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:14:52,578 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:14:52,579 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:14:52,580 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:14:52,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:14:52,584 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:14:52,585 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:14:52,586 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:14:52,586 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:14:52,587 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:14:52,588 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:14:52,589 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:14:52,590 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:14:52,591 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:14:52,593 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:14:52,595 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:14:52,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:14:52,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:14:52,599 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:14:52,601 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:14:52,601 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:14:52,601 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:14:52,602 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:14:52,603 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:14:52,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:14:52,605 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:14:52,606 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:14:52,606 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:14:52,607 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 15:14:52,607 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 15:14:52,607 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 15:14:52,608 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 15:14:52,609 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 15:14:52,609 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:14:52,624 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:14:52,624 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:14:52,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:14:52,626 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:14:52,626 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:14:52,626 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:14:52,626 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:14:52,626 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:14:52,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:14:52,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:14:52,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:14:52,687 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:14:52,688 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:14:52,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/Elevator-Integer.bpl [2018-07-23 15:14:52,689 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/Elevator-Integer.bpl' [2018-07-23 15:14:52,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:14:52,756 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:14:52,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:14:52,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:14:52,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:14:52,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:14:52,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:14:52,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:14:52,817 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:14:52,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/1) ... [2018-07-23 15:14:52,914 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Elevator given in one single declaration [2018-07-23 15:14:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure Elevator [2018-07-23 15:14:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure Elevator [2018-07-23 15:14:53,803 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:14:53,804 INFO L202 PluginConnector]: Adding new model Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:14:53 BoogieIcfgContainer [2018-07-23 15:14:53,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:14:53,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:14:53,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:14:53,810 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:14:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:14:52" (1/2) ... [2018-07-23 15:14:53,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbd3fbd and model type Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:14:53, skipping insertion in model container [2018-07-23 15:14:53,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:14:53" (2/2) ... [2018-07-23 15:14:53,816 INFO L112 eAbstractionObserver]: Analyzing ICFG Elevator-Integer.bpl [2018-07-23 15:14:53,826 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:14:53,839 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:14:53,881 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:14:53,881 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:14:53,882 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:14:53,882 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:14:53,882 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:14:53,882 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:14:53,882 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:14:53,882 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:14:53,883 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:14:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 15:14:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 15:14:53,910 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:14:53,911 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 15:14:53,912 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:14:53,918 INFO L82 PathProgramCache]: Analyzing trace with hash 35564, now seen corresponding path program 1 times [2018-07-23 15:14:53,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:14:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:14:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:14:54,083 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:14:54,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:14:54,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:14:54,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:14:54,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:14:54,110 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-07-23 15:14:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:14:54,197 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 15:14:54,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:14:54,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-07-23 15:14:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:14:54,213 INFO L225 Difference]: With dead ends: 9 [2018-07-23 15:14:54,214 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 15:14:54,217 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:14:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 15:14:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 15:14:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 15:14:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 15:14:54,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-23 15:14:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:14:54,266 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 15:14:54,266 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:14:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 15:14:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:14:54,267 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:14:54,267 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 15:14:54,269 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:14:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash 34183738, now seen corresponding path program 1 times [2018-07-23 15:14:54,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:14:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:14:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:14:54,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:14:54,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:14:54,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:14:54,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:14:54,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:14:54,369 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-07-23 15:14:54,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:14:54,456 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 15:14:54,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:14:54,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-23 15:14:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:14:54,459 INFO L225 Difference]: With dead ends: 9 [2018-07-23 15:14:54,463 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:14:54,465 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:14:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:14:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-23 15:14:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-23 15:14:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-23 15:14:54,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-23 15:14:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:14:54,469 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-23 15:14:54,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:14:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-23 15:14:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:14:54,470 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:14:54,470 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-23 15:14:54,471 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:14:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1509159416, now seen corresponding path program 2 times [2018-07-23 15:14:54,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:14:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:14:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:14:54,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:14:54,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:14:54,831 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:14:54,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:14:54,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:14:54,832 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-23 15:14:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:14:54,949 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 15:14:54,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:14:54,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-23 15:14:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:14:54,952 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:14:54,952 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 15:14:54,953 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:14:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 15:14:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-23 15:14:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-23 15:14:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-23 15:14:54,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-23 15:14:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:14:54,963 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-23 15:14:54,964 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:14:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-23 15:14:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-23 15:14:54,964 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:14:54,965 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-23 15:14:54,965 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:14:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1396754006, now seen corresponding path program 3 times [2018-07-23 15:14:54,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:14:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:14:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:14:55,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:14:55,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:14:55,552 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:14:55,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:14:55,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:14:55,553 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-23 15:14:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:14:55,776 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 15:14:55,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:14:55,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-23 15:14:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:14:55,778 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:14:55,778 INFO L226 Difference]: Without dead ends: 12 [2018-07-23 15:14:55,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:14:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-23 15:14:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-23 15:14:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-23 15:14:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-23 15:14:55,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-23 15:14:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:14:55,787 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-23 15:14:55,788 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:14:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-23 15:14:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 15:14:55,789 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:14:55,789 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-23 15:14:55,789 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:14:55,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2044157148, now seen corresponding path program 4 times [2018-07-23 15:14:55,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:14:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:14:56,422 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2018-07-23 15:14:56,825 WARN L169 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 71 [2018-07-23 15:14:57,008 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2018-07-23 15:14:57,197 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-07-23 15:14:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:14:57,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:14:57,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:14:57,313 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:14:57,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:14:57,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:14:57,314 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2018-07-23 15:14:57,623 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2018-07-23 15:14:57,875 WARN L169 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-07-23 15:14:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:14:57,954 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-23 15:14:57,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:14:57,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2018-07-23 15:14:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:14:57,956 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:14:57,956 INFO L226 Difference]: Without dead ends: 14 [2018-07-23 15:14:57,959 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:14:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-23 15:14:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-23 15:14:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-23 15:14:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-23 15:14:57,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-23 15:14:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:14:57,972 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-23 15:14:57,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:14:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-23 15:14:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:14:57,973 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:14:57,973 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-23 15:14:57,973 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:14:57,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1634958222, now seen corresponding path program 5 times [2018-07-23 15:14:57,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:14:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:14:58,921 WARN L169 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 47 [2018-07-23 15:14:59,873 WARN L169 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 57 [2018-07-23 15:15:00,547 WARN L169 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 58 [2018-07-23 15:15:01,202 WARN L169 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 73 [2018-07-23 15:15:01,836 WARN L169 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 74 [2018-07-23 15:15:02,207 WARN L169 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 61 [2018-07-23 15:15:02,546 WARN L169 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 53 [2018-07-23 15:15:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:02,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:02,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:15:02,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:15:02,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:15:02,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:15:02,728 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-23 15:15:02,908 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 45 [2018-07-23 15:15:03,065 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-07-23 15:15:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:03,357 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-23 15:15:03,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:15:03,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-23 15:15:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:03,358 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:15:03,358 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 15:15:03,359 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 15:15:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-23 15:15:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 15:15:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-23 15:15:03,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-23 15:15:03,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:03,374 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-23 15:15:03,374 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:15:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-23 15:15:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-23 15:15:03,375 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:03,375 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-23 15:15:03,375 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:15:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash 763185728, now seen corresponding path program 6 times [2018-07-23 15:15:03,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:04,506 WARN L169 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 31 [2018-07-23 15:15:04,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:04,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:04,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:04,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:04,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:04,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,771 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:05,845 WARN L169 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 315 DAG size of output: 51 [2018-07-23 15:15:06,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:06,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:06,634 WARN L169 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 69 [2018-07-23 15:15:07,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:07,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:07,440 WARN L169 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 68 [2018-07-23 15:15:07,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:07,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:08,761 WARN L169 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 422 DAG size of output: 101 [2018-07-23 15:15:10,110 WARN L169 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 428 DAG size of output: 105 [2018-07-23 15:15:11,268 WARN L169 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 285 DAG size of output: 92 [2018-07-23 15:15:12,439 WARN L169 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 286 DAG size of output: 92 [2018-07-23 15:15:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:12,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:12,665 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:15:12,665 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:15:12,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:15:12,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:12,666 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 14 states. [2018-07-23 15:15:12,950 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 45 [2018-07-23 15:15:13,139 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 56 [2018-07-23 15:15:13,639 WARN L169 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 113 [2018-07-23 15:15:13,803 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2018-07-23 15:15:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:13,851 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 15:15:13,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:15:13,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2018-07-23 15:15:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:13,853 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:15:13,853 INFO L226 Difference]: Without dead ends: 18 [2018-07-23 15:15:13,853 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:15:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-23 15:15:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-23 15:15:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 15:15:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-23 15:15:13,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-23 15:15:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:13,871 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-23 15:15:13,871 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:15:13,871 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-23 15:15:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:15:13,872 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:13,872 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-23 15:15:13,875 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ElevatorErr0AssertViolationASSERT]=== [2018-07-23 15:15:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1017916274, now seen corresponding path program 7 times [2018-07-23 15:15:13,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:18,534 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 39 [2018-07-23 15:15:18,757 WARN L169 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 42 [2018-07-23 15:15:19,635 WARN L169 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 383 DAG size of output: 64 [2018-07-23 15:15:20,489 WARN L169 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 66 [2018-07-23 15:15:20,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:20,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:20,756 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:21,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:23,031 WARN L169 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 666 DAG size of output: 104 [2018-07-23 15:15:23,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:23,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:23,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:25,005 WARN L169 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 668 DAG size of output: 105 [2018-07-23 15:15:26,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:26,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:27,445 WARN L169 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 765 DAG size of output: 111 [2018-07-23 15:15:30,773 WARN L169 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 772 DAG size of output: 133 [2018-07-23 15:15:31,038 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:33,874 WARN L169 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 757 DAG size of output: 172 [2018-07-23 15:15:36,758 WARN L169 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 759 DAG size of output: 203 [2018-07-23 15:15:37,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:38,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:38,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 15:15:38,542 WARN L169 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 552 DAG size of output: 86 [2018-07-23 15:15:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:38,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:38,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:15:38,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:15:38,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:15:38,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:38,959 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-23 15:15:39,182 WARN L169 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 19 [2018-07-23 15:15:39,428 WARN L169 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 43 [2018-07-23 15:15:39,778 WARN L169 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 52 [2018-07-23 15:15:40,170 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 82 [2018-07-23 15:15:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:40,216 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-23 15:15:40,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:15:40,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-23 15:15:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:40,217 INFO L225 Difference]: With dead ends: 18 [2018-07-23 15:15:40,217 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 15:15:40,218 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:15:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 15:15:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 15:15:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 15:15:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 15:15:40,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-07-23 15:15:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:40,219 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 15:15:40,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:15:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 15:15:40,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 15:15:40,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 15:15:40,382 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 265 [2018-07-23 15:15:40,507 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 265 [2018-07-23 15:15:40,686 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 81 [2018-07-23 15:15:40,852 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 81 [2018-07-23 15:15:40,856 INFO L421 ceAbstractionStarter]: For program point L101(lines 101 108) no Hoare annotation was computed. [2018-07-23 15:15:40,856 INFO L421 ceAbstractionStarter]: For program point L103(lines 103 108) no Hoare annotation was computed. [2018-07-23 15:15:40,858 INFO L417 ceAbstractionStarter]: At program point L178''(lines 163 183) the Hoare annotation is: (let ((.cse18 (+ |Elevator_goal'| 1))) (let ((.cse0 (+ |Elevator_current'| 1)) (.cse1 (<= .cse18 |Elevator_current'|)) (.cse2 (= Elevator_qCSP 2))) (and (<= |Elevator_current'| Elevator_max) (or (or (<= .cse0 |Elevator_goal'|) .cse1) (not .cse2)) (let ((.cse15 (<= |Elevator_goal'| Elevator_max)) (.cse12 (<= Elevator_min |Elevator_goal'|)) (.cse8 (<= |Elevator_goal'| |Elevator_current'|)) (.cse14 (<= Elevator_min |Elevator_current'|)) (.cse17 (= Elevator_qCSP 3))) (let ((.cse5 (< |Elevator_current'| .cse18)) (.cse7 (= Elevator_qDC2 3)) (.cse3 (not .cse17)) (.cse6 (or (and (<= 1 Elevator_qCSP) (or (and .cse2 .cse15 .cse12) (and (<= Elevator_qCSP 1) (<= |Elevator_current'| |Elevator_goal'|) .cse8)) .cse14) .cse17)) (.cse4 (= Elevator_qDC2 2))) (or (and .cse3 (not .cse4) .cse5 .cse6 (not .cse7) .cse8) (let ((.cse16 (+ |Elevator_dir'| 1))) (let ((.cse9 (<= Elevator_qDC2 2)) (.cse10 (<= 2 Elevator_qDC2)) (.cse11 (= 0 .cse16))) (and (or (<= (+ |Elevator_goal'| |Elevator_dir'| 1) |Elevator_current'|) (<= .cse0 (+ |Elevator_goal'| |Elevator_dir'|))) (or .cse5 (and .cse9 .cse10 .cse11 (<= 2 Elevator_qCSP) .cse12)) (or (let ((.cse13 (= |Elevator_goal'| |Elevator_current'|))) (and (or .cse13 (and .cse9 .cse10 (= 1 |Elevator_dir'|))) .cse14 .cse15 (<= 3 Elevator_qCSP) (or (not .cse13) (and (<= Elevator_c2 Elevator_c3) (= Elevator_qDC1 2) (or (not (= .cse16 0)) (<= (+ |Elevator_current'| |Elevator_dir'| 2) Elevator_max)) .cse7)))) .cse1) (or .cse3 .cse11 (<= (+ Elevator_min 1) |Elevator_goal'|))))) (and .cse3 .cse6 .cse4 (not (= Elevator_qCSP 1))))))))) [2018-07-23 15:15:40,858 INFO L421 ceAbstractionStarter]: For program point L155''(lines 145 183) no Hoare annotation was computed. [2018-07-23 15:15:40,858 INFO L421 ceAbstractionStarter]: For program point L175(lines 175 183) no Hoare annotation was computed. [2018-07-23 15:15:40,858 INFO L421 ceAbstractionStarter]: For program point L178(lines 178 183) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L80(lines 80 82) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L123(lines 123 142) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L129(lines 129 142) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L91(lines 91 108) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L94(lines 94 108) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L96(lines 96 108) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L116(lines 116 142) no Hoare annotation was computed. [2018-07-23 15:15:40,861 INFO L421 ceAbstractionStarter]: For program point L80''(lines 80 85) no Hoare annotation was computed. [2018-07-23 15:15:40,862 INFO L421 ceAbstractionStarter]: For program point L99(lines 99 108) no Hoare annotation was computed. [2018-07-23 15:15:40,862 INFO L421 ceAbstractionStarter]: For program point L103''(lines 89 142) no Hoare annotation was computed. [2018-07-23 15:15:40,862 INFO L417 ceAbstractionStarter]: At program point ElevatorEXIT(lines 13 188) the Hoare annotation is: (and (<= |Elevator_current'| Elevator_max) (<= Elevator_min |Elevator_current'|)) [2018-07-23 15:15:40,862 INFO L421 ceAbstractionStarter]: For program point L149(lines 149 160) no Hoare annotation was computed. [2018-07-23 15:15:40,862 INFO L424 ceAbstractionStarter]: At program point ElevatorENTRY(lines 13 188) the Hoare annotation is: true [2018-07-23 15:15:40,862 INFO L421 ceAbstractionStarter]: For program point L135(lines 135 142) no Hoare annotation was computed. [2018-07-23 15:15:40,862 INFO L417 ceAbstractionStarter]: At program point ElevatorErr0AssertViolationASSERT(line 185) the Hoare annotation is: false [2018-07-23 15:15:40,863 INFO L421 ceAbstractionStarter]: For program point L168(lines 168 183) no Hoare annotation was computed. [2018-07-23 15:15:40,863 INFO L421 ceAbstractionStarter]: For program point L165(lines 165 183) no Hoare annotation was computed. [2018-07-23 15:15:40,864 INFO L417 ceAbstractionStarter]: At program point L48(lines 13 188) the Hoare annotation is: (let ((.cse18 (+ |Elevator_goal'| 1))) (let ((.cse0 (+ |Elevator_current'| 1)) (.cse1 (<= .cse18 |Elevator_current'|)) (.cse2 (= Elevator_qCSP 2))) (and (<= |Elevator_current'| Elevator_max) (or (or (<= .cse0 |Elevator_goal'|) .cse1) (not .cse2)) (let ((.cse15 (<= |Elevator_goal'| Elevator_max)) (.cse12 (<= Elevator_min |Elevator_goal'|)) (.cse8 (<= |Elevator_goal'| |Elevator_current'|)) (.cse14 (<= Elevator_min |Elevator_current'|)) (.cse17 (= Elevator_qCSP 3))) (let ((.cse5 (< |Elevator_current'| .cse18)) (.cse7 (= Elevator_qDC2 3)) (.cse3 (not .cse17)) (.cse6 (or (and (<= 1 Elevator_qCSP) (or (and .cse2 .cse15 .cse12) (and (<= Elevator_qCSP 1) (<= |Elevator_current'| |Elevator_goal'|) .cse8)) .cse14) .cse17)) (.cse4 (= Elevator_qDC2 2))) (or (and .cse3 (not .cse4) .cse5 .cse6 (not .cse7) .cse8) (let ((.cse16 (+ |Elevator_dir'| 1))) (let ((.cse9 (<= Elevator_qDC2 2)) (.cse10 (<= 2 Elevator_qDC2)) (.cse11 (= 0 .cse16))) (and (or (<= (+ |Elevator_goal'| |Elevator_dir'| 1) |Elevator_current'|) (<= .cse0 (+ |Elevator_goal'| |Elevator_dir'|))) (or .cse5 (and .cse9 .cse10 .cse11 (<= 2 Elevator_qCSP) .cse12)) (or (let ((.cse13 (= |Elevator_goal'| |Elevator_current'|))) (and (or .cse13 (and .cse9 .cse10 (= 1 |Elevator_dir'|))) .cse14 .cse15 (<= 3 Elevator_qCSP) (or (not .cse13) (and (<= Elevator_c2 Elevator_c3) (= Elevator_qDC1 2) (or (not (= .cse16 0)) (<= (+ |Elevator_current'| |Elevator_dir'| 2) Elevator_max)) .cse7)))) .cse1) (or .cse3 .cse11 (<= (+ Elevator_min 1) |Elevator_goal'|))))) (and .cse3 .cse6 .cse4 (not (= Elevator_qCSP 1))))))))) [2018-07-23 15:15:40,864 INFO L421 ceAbstractionStarter]: For program point L171(lines 171 183) no Hoare annotation was computed. [2018-07-23 15:15:40,864 INFO L421 ceAbstractionStarter]: For program point L135''(lines 111 160) no Hoare annotation was computed. [2018-07-23 15:15:40,864 INFO L421 ceAbstractionStarter]: For program point L152(lines 152 160) no Hoare annotation was computed. [2018-07-23 15:15:40,864 INFO L421 ceAbstractionStarter]: For program point L83'(lines 83 108) no Hoare annotation was computed. [2018-07-23 15:15:40,864 INFO L421 ceAbstractionStarter]: For program point L155(lines 155 160) no Hoare annotation was computed. [2018-07-23 15:15:40,882 INFO L202 PluginConnector]: Adding new model Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:15:40 BoogieIcfgContainer [2018-07-23 15:15:40,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:15:40,885 INFO L168 Benchmark]: Toolchain (without parser) took 48130.21 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 190.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-23 15:15:40,891 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:15:40,892 INFO L168 Benchmark]: Boogie Preprocessor took 59.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:15:40,893 INFO L168 Benchmark]: RCFGBuilder took 988.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 15:15:40,893 INFO L168 Benchmark]: TraceAbstraction took 47078.01 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 158.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-23 15:15:40,897 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 988.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47078.01 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 158.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 185]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (current' <= max && ((current' + 1 <= goal' || goal' + 1 <= current') || !(qCSP == 2))) && (((((((!(qCSP == 3) && !(qDC2 == 2)) && current' < goal' + 1) && (((1 <= qCSP && (((qCSP == 2 && goal' <= max) && min <= goal') || ((qCSP <= 1 && current' <= goal') && goal' <= current'))) && min <= current') || qCSP == 3)) && !(qDC2 == 3)) && goal' <= current') || ((((goal' + dir' + 1 <= current' || current' + 1 <= goal' + dir') && (current' < goal' + 1 || ((((qDC2 <= 2 && 2 <= qDC2) && 0 == dir' + 1) && 2 <= qCSP) && min <= goal'))) && ((((((goal' == current' || ((qDC2 <= 2 && 2 <= qDC2) && 1 == dir')) && min <= current') && goal' <= max) && 3 <= qCSP) && (!(goal' == current') || (((c2 <= c3 && qDC1 == 2) && (!(dir' + 1 == 0) || current' + dir' + 2 <= max)) && qDC2 == 3))) || goal' + 1 <= current')) && ((!(qCSP == 3) || 0 == dir' + 1) || min + 1 <= goal'))) || (((!(qCSP == 3) && (((1 <= qCSP && (((qCSP == 2 && goal' <= max) && min <= goal') || ((qCSP <= 1 && current' <= goal') && goal' <= current'))) && min <= current') || qCSP == 3)) && qDC2 == 2) && !(qCSP == 1))) - ProcedureContractResult [Line: 13]: Procedure Contract for Elevator Derived contract for procedure Elevator: current' <= max && min <= current' - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. SAFE Result, 46.9s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 4.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 75 SDslu, 3 SDs, 0 SdLazy, 123 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 36.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 20 NumberOfFragments, 469 HoareAnnotationTreeSize, 5 FomulaSimplifications, 803 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 6445 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 40.4s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 139712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 0/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Elevator-Integer.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-15-40-911.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Elevator-Integer.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-15-40-911.csv Received shutdown request...